If we are focusing on "playoff" Forsberg, let's get the narrative right.
He has an OK rookie playoff debut in 1995 as the favoured Nords lose to the Rangers.
Sakic's 1996 run is easily the best playoff run in the '96 to '04 time period. 17 goals in 18 games, 10 points in 6 games vs. the powerful Wings in the WCF, and numerous clutch goals and points in OT and series clinching games. It is up there with the best playoff runs of all-time by players not named Wayne or Mario. Forsberg was a solid support player
It was the Sakic show again in 1997 although Forsberg was matching him through Game 3 of Round 2 before, surprise, surprise, getting injured. The Avs were piling on the goals up to that point in the playoffs. Sakic was still good after this but it was the Wings year (finally).
In 1998, Forsberg got off to a monster start for the first four games in Round 1 then he joined the rest of Avs in getting completely shut down as the Oilers took 3 straight. It was an embarrassing loss for the Avs that takes some of the shine off of Forsberg's performance.
In 1999, Sakic was the star in Round 1, Forsberg was solid. Forsberg was the star in Round 2. He was solid in Round 3 but he, like the rest of the Avs, could not close out the Stars in Game 6 or 7. It was a great "3 Round" performance but not to the level of being "historically" great.
In 2000, Forsberg was very good as, again, the Avs lost in the WCF.
In 2001, both Sakic and Forsberg are good through 2 rounds as is Hedyuk. Sakic is the star over the next 2 rounds without Forsberg.
In 2002, Forsberg is the star as the Avs lose another "Real Stanley Cup" to the Wings. It was another great "3 Round" performance but not to the level of being "historically" great. The Avs were an offensive-minded team during that time while other contenders played very defensive games which arguably hampered individual point totals.
In 2003, he and Sakic are good against the Wild, noone else on the Avs made a major contribution.
In 2004, he and Sakic are good but not good enough to get to the 3rd round.
I do think the playoff resumes of Sakic and Forsberg close the gap between them and Jagr in a "Best player" discussion for that era.
It is ironic that the Avs won their two Cups on the back of Sakic, one notably when Forsberg was out.